Working platform for welding construction of steel structure bridge

Abstract

The invention provides a working platform for steel structure bridge welding construction, and relates to the technical field of steel structure welding, a working platform body comprises a supporting seat, a driving assembly, a clamp and a heat dissipation assembly, an auxiliary fixing assembly is welded to the bottom of the supporting seat, and a fixing seat is welded to the top end of the auxiliary fixing assembly; an extrusion mechanism is installed at the bottom of the fixing base, an extrusion plate is installed at the top of the extrusion mechanism, a fixing motor base is welded to the surface of the supporting base, a driving assembly is installed in the middle of the fixing motor base, and a sliding groove is formed in the surface of the supporting base. According to the working platform for welding construction of the steel structure bridge, the heat dissipation assembly is controlled to ascend and descend to be matched with the working platform to conduct blowing heat dissipation treatment in a short distance when a workpiece is welded, the heat dissipation effect is improved, and the discharging process can be completed by directly pulling the clamping plate at the rear end in the subsequent discharging process; and the stability during two-stage welding and the high efficiency during discharging are both considered, and welding is more comprehensive.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure welding, in particular to a working platform for welding construction of steel structure bridges. Background Art

[0002] Steel structure is a structure made of steel material, which is one of the main types of building structures. Existing steel structure bridge components are usually produced in the factory and then transported to the construction site for assembly, which requires the use of an operating platform to weld and assemble the steel. According to the existing patent document with publication number CN218193374U, a working equipment for steel structure bridge welding construction is disclosed, which includes a workbench, the upper surface of the workbench is provided with two corresponding through holes, the inner wall of the through hole is rotatably connected to a rotating column through a bearing, the top of the rotating column is fixedly connected to a movable chassis, the upper surface of the movable chassis is fixedly connected to two corresponding limit baffles, and the surfaces of the two limit baffles are provided with corresponding placement grooves.

[0003] According to the above content, the existing technology uses a driving servo motor to drive the two movable chassis to rotate, and then drives the steel on the surface of the limit baffle to adjust the welding angle, so as to facilitate the staff to weld the two steels at different angles. For the above technical solution, although the solution realizes welding at different angles, it is impossible to squeeze the welding point inward for limiting during welding. In addition, the steel structure is not convenient for full-circle welding, which is inconvenient during use. At the same time, high temperature and sparks will be generated during the welding process, which poses certain risks, and the conventional work platform area clamps and fixes the workpiece, which leads to cumbersome operation steps when unloading. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a working platform for welding construction of steel structure bridges to solve the problems raised in the above-mentioned background technology. The present invention can perform heat dissipation treatment at a close distance, improve the heat dissipation effect, have higher installation stability, and can quickly discharge materials.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a working platform for welding construction of steel structure bridges, comprising a working platform body, the working platform body comprising a support seat, a driving assembly, a clamp and a heat dissipation assembly, an auxiliary fixing assembly is welded on the bottom of the support seat, a fixed seat is welded on the top of the auxiliary fixing assembly, an extrusion mechanism is installed on the bottom of the fixed seat, an extrusion plate is installed on the top of the extrusion mechanism, a fixed motor seat is welded on the surface of the support seat, the driving assembly is installed in the middle of the fixed motor seat, a slide groove is opened on the surface of the support seat, a sliding plate is inserted in the interior of the slide groove, the end of the driving assembly is against the surface of the sliding plate, the clamp is installed between the sliding plate and the fixed motor seat, and the clamp comprises a first clamp and a second clamp, a heat dissipation assembly is inserted on the rear end of the support seat, the surface of the heat dissipation assembly is in contact with the surface of the support seat, and the central axis of the fixed motor seat and the sliding plate coincide.

[0006] Furthermore, the driving assembly includes a servo motor, a driving shaft, a first rotating seat and a second rotating seat, a second electric telescopic rod is connected between the first rotating seat and the second rotating seat, and a linkage column is embedded on the surface of the second rotating seat.

[0007] Furthermore, the end of the linkage column is embedded in the interior of the sliding plate, and the second rotating seat pulls the sliding plate to perform translational movement through the linkage column. The side of the sliding plate is integrally formed with a slider, and the side of the slider is integrally formed with a limiting block. A limiting groove is provided on the inner wall of the slide groove, the slider is embedded in the interior of the slide groove, and the limiting block is embedded in the interior of the limiting groove.

[0008] Furthermore, the number of the second electric telescopic rods is two, the outer shell of the servo motor is screwed to the surface of the fixed motor seat, and the drive shaft passes through the middle of the fixed motor seat and is connected to the middle of the first rotating seat through a flat key.

[0009] Furthermore, the first clamp and the second clamp both include a mounting seat, a front end clamp and a rear end clamp, the surface of the mounting seat is provided with strip holes and grooves, one end of the mounting seat is provided with a second docking hole, the surface of the rear end clamp is provided with a first docking hole, and the side of the mounting seat of the first clamp is provided with a second blowing hole.

[0010] Furthermore, a screw rod is inserted into the interior of each of the strip holes, and a knob is integrally formed at the end of the screw rod. A positioning hole is also opened on the side of the mounting seat of the first clamp, and a positioning column is welded on the side of the mounting seat of the second clamp. The end of the positioning column is embedded in the interior of the positioning hole. The first clamp is welded and fixed to the surface of the first rotating seat, and the second clamp is welded and fixed to the surface of the second rotating seat.

[0011] Furthermore, a spring rod is inserted into the interior of the groove, a front end plug-in plate is integrally formed at the bottom of the front end splint, the screw rod passes through the middle of the front end plug-in plate, a rear end plug-in plate is integrally formed at the bottom of the rear end splint, the rear end plug-in plate is embedded in the interior of the groove, and a guide hole is provided on the surface of the rear end plug-in plate, the guide hole is sleeved on the surface of the spring rod, and a first blowing hole is provided on the side of the rear end splint.

[0012] Furthermore, the heat dissipation assembly includes a movable box, a first baffle and a top support plate, a mounting groove is provided at the bottom of the movable box, a first electric telescopic rod is inserted into the interior of the mounting groove, an air outlet is provided on the surface of the movable box, a first baffle, a second baffle and a top support plate are welded to the surface of the support seat, and a first air supply hole is provided inside the second baffle.

[0013] Furthermore, the second baffle is connected to the interior of the rear end clamping plate through the first air supply hole, a second air supply hole is opened inside the top support plate, and the top support plate is connected to the second docking hole portion through the second air supply hole.

[0014] Furthermore, the first electric telescopic rod is used to push the movable box to perform lifting movements, a blower is screwed inside the movable box, and the movable box is aligned with the inside of the first baffle or the top plate through the air outlet.

[0015] Beneficial effects of the present invention:

[0016] 1. When the working platform for steel structure bridge welding construction is used, the steel structure is installed between the rear end clamping plate and the front end clamping plate respectively. The driving assembly drives the mounting seat to move inward to squeeze and align the two ends of the steel structure. During welding, the upper half circle of welding is completed first, and then the servo motor is started to drive the rotating seat to rotate, so that the workpiece moves to the bottom of the motor seat. After the workpiece rotates, the bottom position is leaked and the other half circle of welding is carried out, thereby realizing the comprehensive welding of the steel structure.

[0017] 2. After the steel structure of the working platform for steel structure bridge welding construction moves to the top of the fixed seat, the extrusion mechanism is started to push the extrusion plate to contact the workpiece. The extrusion plate and the rear end clamping plate are staggered, and the extrusion plate and the rear end clamping plate cooperate to realize multi-point support and fixation of the steel structure. In addition, one end of the extrusion mechanism is in contact with the ground, and the extrusion mechanism and the support seat cooperate to provide parallel support force for the equipment as a whole.

[0018] 3. The working platform for welding construction of steel structure bridges can control the lifting movement of the heat dissipation component to cooperate with the above-mentioned close-range air blowing and heat dissipation treatment when welding the workpiece, thereby improving the heat dissipation effect. In the subsequent discharge, the discharge process can be completed by directly pulling the rear end clamp, taking into account the stability during the two stages of welding and the efficiency during discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of the appearance of a working platform for welding construction of a steel structure bridge according to the present invention;

[0020] Figure 2 This is a structural diagram of the present invention after the clamp is removed;

[0021] Figure 3 It is a structural diagram of the driving component part of the present invention;

[0022] Figure 4 It is a schematic diagram of the connection of two clamp parts of the present invention;

[0023] Figure 5 is a schematic diagram of the first clamp part of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the rear end clamping plate part of the present invention;

[0025] Figure 7 is a schematic diagram of a heat dissipation component of the present invention;

[0026] Figure 8 for Figure 2 A magnified image of area A;

[0027] Fig. 9 A side view of the present invention when driving a workpiece;

[0028] In the figure: 1, support seat; 2, drive assembly; 3, first clamp; 4, second clamp; 5, auxiliary fixing assembly; 6, heat dissipation assembly; 7, fixed motor seat; 8, drive shaft; 9, servo motor; 10, slide groove; 11, limit groove; 12, sliding plate; 13, linkage column; 14, slider; 15, limit block; 16, screw rod; 17, knob; 18, positioning column; 19, mounting seat; 20, strip hole; 21, groove; 22, spring rod; 23, front clamp; 24, front plug-in board; 25, second docking hole; 26, first Second air blowing hole; 27, positioning hole; 28, rear end clamping plate; 29, rear end plug-in plate; 30, guide hole; 31, first docking hole; 32, first air blowing hole; 33, first electric telescopic rod; 34, second electric telescopic rod; 35, mounting groove; 36, movable box; 37, air outlet; 38, first baffle plate; 39, first air supply hole; 40, second baffle plate; 41, supporting plate; 42, second air supply hole; 43, workpiece; 44, second rotating seat; 45, fixed seat; 46, extrusion mechanism; 47, extrusion plate; 48, first rotating seat. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] See also Figures 1 to 9 The present invention provides the following technical solutions: A working platform for welding construction of steel structure bridges, comprising a working platform body, the working platform body comprising a support seat 1, a drive assembly 2, a clamp and a heat dissipation assembly 6, an auxiliary fixing assembly 5 is welded at the bottom of the support seat 1, a fixed seat 45 is welded at the top of the auxiliary fixing assembly 5, an extrusion mechanism 46 is installed at the bottom of the fixed seat 45, and an extrusion plate 47 is installed at the top of the extrusion mechanism 46, a fixed motor seat 7 is welded on the surface of the support seat 1, the drive assembly 2 is installed in the middle of the fixed motor seat 7, a slide groove 10 is opened on the surface of the support seat 1, a sliding plate 12 is inserted in the interior of the slide groove 10, the end of the drive assembly 2 is against the surface of the sliding plate 12, the clamp is installed between the sliding plate 12 and the fixed motor seat 7, and the clamp comprises a first clamp 3 and a second clamp 4, a heat dissipation assembly 6 is inserted at the rear end of the support seat 1, the surface of the heat dissipation assembly 6 is in contact with the surface of the support seat 1, and the central axis of the fixed motor seat 7 and the sliding plate 12 coincide. The working platform for welding construction of a steel structure bridge is used for performing welding processing on two workpieces 43 .

[0031] When the present invention is used, the screw rod 16 is first driven to rotate by the knob 17. The screw rod 16 drives the front end plug-in plate 24 to move inside the strip hole 20 in the rotating state. The front end plug-in plate 24 drives the front end clamping plate 23 to move to one end of the strip hole 20, and the workpiece 43 is placed on one side of the front end clamping plate 23. Later, the screw rod 16 is rotated by the knob 17. The screw rod 16 drives the front end clamping plate 23 to push the workpiece 43 to the inside of the rear end clamping plate 28. The clamping and limiting of the workpiece 43 is achieved by the extrusion force of the front end clamping plate 23. After the workpiece 43 is clamped and fixed, the driving component 2 is started to drive the two clamps to move closer to each other. The second rotating seat 44 squeezes and aligns the two ends of the workpiece 43 while moving. After alignment, it is welded by an external welding device. The workpiece 43 is welded, and the heat dissipation component 6 is started during welding to push the movable box 36 upward, and air is blown to quickly cool the welding point. After cooling, the strength of the welding point is increased, and then the servo motor 9 is started to drive the rotating seat to rotate. During rotation, the front clamp 23 and the rear clamp 28 limit the workpiece 43. When the workpiece 43 rotates to a certain degree, the extrusion mechanism 46 is started, and the extrusion mechanism 46 pushes the extrusion plate 47 to contact the workpiece 43. The extrusion plate 47 pushes the workpiece 43 to move upward, so that one side of the workpiece 43 contacts the mounting seat 19, and then the other unwelded position is welded again through the gap between the mounting seats 19 through the welding equipment. During the welding process, the heat dissipation component 6 is still used to provide close-range heat dissipation treatment.

[0032] In this embodiment, the driving assembly 2 includes a servo motor 9, a driving shaft 8, a first rotating seat 48 and a second rotating seat 44, a second electric telescopic rod 34 is connected between the first rotating seat 48 and the second rotating seat 44, and a linkage column 13 is embedded on the surface of the second rotating seat 44. The end of the linkage column 13 is embedded in the interior of the sliding plate 12, and the second rotating seat 44 pulls the sliding plate 12 through the linkage column 13 to perform translational movement, the side of the sliding plate 12 is integrally formed with a slider 14, and the side of the slider 14 is integrally formed with a limiting block 15, and a limiting groove 11 is provided on the inner wall of the slide 10, the slider 14 is embedded in the interior of the slide 10, and the limiting block 15 is embedded in the interior of the limiting groove 11. The number of the second electric telescopic rod 34 is two, the outer shell of the servo motor 9 is screwed on the surface of the fixed motor seat 7, and the driving shaft 8 passes through the middle of the fixed motor seat 7 and is connected to the middle of the first rotating seat 48 through a flat key.

[0033] Specifically, after the workpiece 43 is clamped by means of the first clamp 3 and the second clamp 4, the second electric telescopic rod 34 is started. Through the contraction effect of the second electric telescopic rod 34, the second rotating seat 44 at the end can be pulled toward the position of the first rotating seat 48. In this process, the external sliding plate 12 and part of the first clamp 3 can be synchronously driven to approach the position of the second clamp 4. At this time, the two workpieces 43 on the first clamp 3 and the second clamp 4 can be pressed against each other and contacted, and a large extrusion force is generated. Finally, under the extrusion effect, the upper semicircular area of ​​the contact position of the two workpieces 43 is welded from the top.

[0034] In this embodiment, the first clamp 3 and the second clamp 4 both include a mounting seat 19, a front end clamp 23 and a rear end clamp 28. The surface of the mounting seat 19 is provided with a strip hole 20 and a groove 21. One end of the mounting seat 19 is provided with a second docking hole 25. The surface of the rear end clamp 28 is provided with a first docking hole 31. The side of the mounting seat 19 of the first clamp 3 is provided with a second blowing hole 26. A screw rod 16 is inserted into the interior of each of the strip holes 20, and a knob 17 is integrally formed at the end of the screw rod 16. A positioning hole 27 is also provided on the side of the mounting seat 19 of the first clamp 3, and a positioning column 18 is welded on the side of the mounting seat 19 of the second clamp 4, and the end of the positioning column 18 is embedded in the interior of the positioning hole 27. The first clamp 3 is welded and fixed to the surface of the first rotating seat 48, and the second clamp 4 is welded and fixed to the surface of the second rotating seat 44. A spring rod 22 is inserted into the interior of the groove 21, and a front end plug-in plate 24 is integrally formed at the bottom of the front end clamp 23. The screw rod 16 passes through the middle of the front end plug-in plate 24, and a rear end plug-in plate 29 is integrally formed at the bottom of the rear end clamp 28. The rear end plug-in plate 29 is embedded in the interior of the groove 21, and a guide hole 30 is provided on the surface of the rear end plug-in plate 29, and the guide hole 30 is sleeved on the surface of the spring rod 22, and a first blowing hole 32 is provided on the side of the rear end clamp 28.

[0035] Specifically, when clamping, the front end clamping plate 23 and the rear end clamping plate 28 can be pushed closer by directly turning the knob 17 to achieve the clamping effect on the workpiece 43, and in the first stage of welding, the first baffle 38 and the second baffle 40 at the rear end will be respectively pressed against the rear of the two rear end clamping plates 28. This structure can ensure that the rear end clamping plate 28 can remain stationary after receiving the thrust provided by the front end clamping plate 23 and the workpiece 43, thereby ensuring that pressure is applied to the workpiece 43. At the same time, in this state, the rear end clamping plate 28 on the first clamp 3 will be docked with the first air supply hole 39 at the first baffle 38 by means of the first docking hole 31 at the rear. At this time, the heat dissipation component 6 can be directly used to blow the airflow from the first blowing hole 32 toward the welding area to achieve a cooling effect.

[0036] In this embodiment, the heat dissipation assembly 6 includes a movable box 36, a first baffle plate 38 and a top support plate 41. The bottom of the movable box 36 is provided with a mounting groove 35, and the first electric telescopic rod 33 is inserted into the mounting groove 35. The surface of the movable box 36 is provided with an air outlet 37. The surface of the support seat 1 is welded with a first baffle plate 38, a second baffle plate 40 and a top support plate 41, and the second baffle plate 40 is provided with a first air supply hole 39. The second baffle plate 40 is connected to the interior of the rear end clamping plate 28 through the first air supply hole 39, and the top support plate 41 is provided with a second air supply hole 42, and the top support plate 41 is partially connected to the second docking hole 25 through the second air supply hole 42. The first electric telescopic rod 33 is used to push the movable box 36 to perform lifting and lowering movements. The interior of the movable box 36 is screwed with a blower, and the movable box 36 is aligned with the interior of the first baffle plate 38 or the top support plate 41 through the air outlet 37. By controlling the lifting movement of the heat dissipation component 6, the above-mentioned air blowing heat dissipation treatment can be carried out at a close distance when welding the workpiece 43, thereby improving the heat dissipation effect. During the subsequent discharge, the rear end clamping plate 28 can be directly pulled to complete the discharge process, taking into account the stability during the two stages of welding and the efficiency during discharge.

[0037] Specifically, after the welding machine processing of the upper semicircular part of the workpiece 43 is completed, the workpiece 43 is controlled to rotate to the bottom by the driving component 2. At this time, the first baffle 38 and the second baffle 40 no longer have a restrictive effect on the rear end clamping plate 28 part, but the workpiece 43 will apply a thrust to the rear end clamping plate 28 area through the spring rod 22 during this process, and there is still a certain clamping force, and the workpiece 43 is always blocked by the rear end clamping plate 28 to the outside and the bottom of the front end clamping plate 23, which can ensure that the workpiece 43 will not fall off until the entire fixture completes the flipping process. After flipping, the workpiece 43 is fixed again with the help of the auxiliary fixing component 5, and at this time, the mounting seat 19 on the first fixture 3 is docked with the second air supply hole 42 through the second docking hole 25, and the first electric telescopic rod 33 is controlled to align the air outlet 37 part on the movable box 36 with the rear end of the top plate 41, so that the airflow can be directly delivered from the second air supply hole 42 to the second blowing hole 26, so as to achieve a close-range cooling and blowing effect on the workpiece 43. After welding is completed, the workpiece 43 can be removed by directly pulling the rear clamping plate 28 .

[0038] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A working platform for welding construction of steel structure bridges, comprising a working platform body, characterized in that: The working platform body comprises a support seat (1), a driving assembly (2), a clamp and a heat dissipation assembly (6); an auxiliary fixing assembly (5) is welded to the bottom of the support seat (1); a fixing seat (45) is welded to the top of the auxiliary fixing assembly (5); an extrusion mechanism (46) is installed at the bottom of the fixing seat (45); an extrusion plate (47) is installed at the top of the extrusion mechanism (46); a fixed motor seat (7) is welded to the surface of the support seat (1); the driving assembly (2) is installed in the middle of the fixed motor seat (7); and the support seat The surface of the support seat (1) is provided with a slide groove (10), a sliding plate (12) is inserted inside the slide groove (10), the end of the driving component (2) is pressed against the surface of the sliding plate (12), the clamp is installed between the sliding plate (12) and the fixed motor seat (7), and the clamp includes a first clamp (3) and a second clamp (4), a heat dissipation component (6) is inserted at the rear end of the support seat (1), the surface of the heat dissipation component (6) is in contact with the surface of the support seat (1), and the central axis of the fixed motor seat (7) and the sliding plate (12) coincides.

2. A working platform for welding construction of steel structure bridge according to claim 1, characterized in that: The driving assembly (2) comprises a servo motor (9), a driving shaft (8), a first rotating seat (48) and a second rotating seat (44); a second electric telescopic rod (34) is connected between the first rotating seat (48) and the second rotating seat (44); and a linkage column (13) is embedded on the surface of the second rotating seat (44).

3. A working platform for welding construction of steel structure bridge according to claim 2, characterized in that: The end of the linkage column (13) is embedded in the interior of the sliding plate (12), and the second rotating seat (44) pulls the sliding plate (12) through the linkage column (13) to perform translational movement. The side of the sliding plate (12) is integrally formed with a slider (14), and the side of the slider (14) is integrally formed with a limiting block (15). A limiting groove (11) is provided on the inner wall of the slide groove (10), the slider (14) is embedded in the interior of the slide groove (10), and the limiting block (15) is embedded in the interior of the limiting groove (11).

4. A working platform for welding construction of steel structure bridge according to claim 3, characterized in that: The number of the second electric telescopic rods (34) is two, the outer shell of the servo motor (9) is screwed onto the surface of the fixed motor seat (7), and the drive shaft (8) passes through the middle of the fixed motor seat (7) and is connected to the middle of the first rotating seat (48) via a flat key.

5. A working platform for welding construction of steel structure bridge according to claim 2, characterized in that: The first clamp (3) and the second clamp (4) both comprise a mounting seat (19), a front end clamp (23) and a rear end clamp (28); a strip hole (20) and a groove (21) are provided on the surface of the mounting seat (19); a second docking hole (25) is provided at one end of the mounting seat (19); a first docking hole (31) is provided on the surface of the rear end clamp (28); and a second blowing hole (26) is provided on the side of the mounting seat (19) of the first clamp (3).

6. A working platform for welding construction of steel structure bridge according to claim 5, characterized in that: A screw rod (16) is inserted into the interior of each of the strip holes (20), and a knob (17) is integrally formed at the end of the screw rod (16). A positioning hole (27) is also provided on the side of the mounting seat (19) of the first clamp (3). A positioning column (18) is welded to the side of the mounting seat (19) of the second clamp (4), and the end of the positioning column (18) is embedded in the interior of the positioning hole (27). The first clamp (3) is welded and fixed to the surface of the first rotating seat (48), and the second clamp (4) is welded and fixed to the surface of the second rotating seat (44).

7. A working platform for welding construction of steel structure bridge according to claim 6, characterized in that: A spring rod (22) is inserted into the interior of the groove (21); a front end plug-in plate (24) is integrally formed at the bottom of the front end clamp (23); the screw rod (16) passes through the middle of the front end plug-in plate (24); a rear end plug-in plate (29) is integrally formed at the bottom of the rear end clamp (28); the rear end plug-in plate (29) is embedded in the interior of the groove (21); a guide hole (30) is provided on the surface of the rear end plug-in plate (29); the guide hole (30) is sleeved on the surface of the spring rod (22); and a first blowing hole (32) is provided on the side of the rear end clamp (28).

8. A working platform for welding construction of steel structure bridge according to claim 5, characterized in that: The heat dissipation assembly (6) comprises a movable box (36), a first baffle plate (38) and a top support plate (41); a mounting groove (35) is provided at the bottom of the movable box (36); a first electric telescopic rod (33) is inserted into the interior of the mounting groove (35); an air outlet (37) is provided on the surface of the movable box (36); a first baffle plate (38), a second baffle plate (40) and a top support plate (41) are welded to the surface of the support seat (1); a first air supply hole (39) is provided inside the second baffle plate (40).

9. A working platform for welding construction of steel structure bridge according to claim 8, characterized in that: The second baffle plate (40) is connected to the interior of the rear end clamping plate (28) through the first air supply hole (39), a second air supply hole (42) is provided inside the supporting plate (41), and the supporting plate (41) is partially connected to the second docking hole (25) through the second air supply hole (42).

10. A working platform for welding construction of steel structure bridge according to claim 9, characterized in that: The first electric telescopic rod (33) is used to push the movable box (36) to perform lifting movement, a blower is screwed inside the movable box (36), and the movable box (36) is aligned with the inside of the first baffle (38) or the supporting plate (41) through the air outlet (37).

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